\doxysection{arm\+\_\+cfft\+\_\+radix2\+\_\+instance\+\_\+q31 Struct Reference}
\hypertarget{structarm__cfft__radix2__instance__q31}{}\label{structarm__cfft__radix2__instance__q31}\index{arm\_cfft\_radix2\_instance\_q31@{arm\_cfft\_radix2\_instance\_q31}}


Instance structure for the Radix-\/2 Q31 CFFT/\+CIFFT function.  




{\ttfamily \#include $<$arm\+\_\+math.\+h$>$}

\doxysubsubsection*{Public Attributes}
\begin{DoxyCompactItemize}
\item 
uint16\+\_\+t \mbox{\hyperlink{structarm__cfft__radix2__instance__q31_a960199f1373a192366878ef279eab00f}{fft\+Len}}
\item 
uint8\+\_\+t \mbox{\hyperlink{structarm__cfft__radix2__instance__q31_a2607378ce64be16698bb8a3b1af8d3c8}{ifft\+Flag}}
\item 
uint8\+\_\+t \mbox{\hyperlink{structarm__cfft__radix2__instance__q31_a6239b8d268285334e88c008c07d68616}{bit\+Reverse\+Flag}}
\item 
const q31\+\_\+t \texorpdfstring{$\ast$}{*} \mbox{\hyperlink{structarm__cfft__radix2__instance__q31_aa4c768710741df76a39bae591014612f}{p\+Twiddle}}
\item 
const uint16\+\_\+t \texorpdfstring{$\ast$}{*} \mbox{\hyperlink{structarm__cfft__radix2__instance__q31_ab81d873079b8038422da0d459fc8fd63}{p\+Bit\+Rev\+Table}}
\item 
uint16\+\_\+t \mbox{\hyperlink{structarm__cfft__radix2__instance__q31_ae63ca9193322cd477970c1d2086407d1}{twid\+Coef\+Modifier}}
\item 
uint16\+\_\+t \mbox{\hyperlink{structarm__cfft__radix2__instance__q31_a9d17a87263953fe3559a007512c9f3a4}{bit\+Rev\+Factor}}
\end{DoxyCompactItemize}


\doxysubsection{Detailed Description}
Instance structure for the Radix-\/2 Q31 CFFT/\+CIFFT function. 

\label{doc-variable-members}
\Hypertarget{structarm__cfft__radix2__instance__q31_doc-variable-members}
\doxysubsection{Member Data Documentation}
\Hypertarget{structarm__cfft__radix2__instance__q31_a6239b8d268285334e88c008c07d68616}\index{arm\_cfft\_radix2\_instance\_q31@{arm\_cfft\_radix2\_instance\_q31}!bitReverseFlag@{bitReverseFlag}}
\index{bitReverseFlag@{bitReverseFlag}!arm\_cfft\_radix2\_instance\_q31@{arm\_cfft\_radix2\_instance\_q31}}
\doxysubsubsection{\texorpdfstring{bitReverseFlag}{bitReverseFlag}}
{\footnotesize\ttfamily \label{structarm__cfft__radix2__instance__q31_a6239b8d268285334e88c008c07d68616} 
uint8\+\_\+t arm\+\_\+cfft\+\_\+radix2\+\_\+instance\+\_\+q31\+::bit\+Reverse\+Flag}

flag that enables (bit\+Reverse\+Flag=1) or disables (bit\+Reverse\+Flag=0) bit reversal of output. \Hypertarget{structarm__cfft__radix2__instance__q31_a9d17a87263953fe3559a007512c9f3a4}\index{arm\_cfft\_radix2\_instance\_q31@{arm\_cfft\_radix2\_instance\_q31}!bitRevFactor@{bitRevFactor}}
\index{bitRevFactor@{bitRevFactor}!arm\_cfft\_radix2\_instance\_q31@{arm\_cfft\_radix2\_instance\_q31}}
\doxysubsubsection{\texorpdfstring{bitRevFactor}{bitRevFactor}}
{\footnotesize\ttfamily \label{structarm__cfft__radix2__instance__q31_a9d17a87263953fe3559a007512c9f3a4} 
uint16\+\_\+t arm\+\_\+cfft\+\_\+radix2\+\_\+instance\+\_\+q31\+::bit\+Rev\+Factor}

bit reversal modifier that supports different size FFTs with the same bit reversal table. \Hypertarget{structarm__cfft__radix2__instance__q31_a960199f1373a192366878ef279eab00f}\index{arm\_cfft\_radix2\_instance\_q31@{arm\_cfft\_radix2\_instance\_q31}!fftLen@{fftLen}}
\index{fftLen@{fftLen}!arm\_cfft\_radix2\_instance\_q31@{arm\_cfft\_radix2\_instance\_q31}}
\doxysubsubsection{\texorpdfstring{fftLen}{fftLen}}
{\footnotesize\ttfamily \label{structarm__cfft__radix2__instance__q31_a960199f1373a192366878ef279eab00f} 
uint16\+\_\+t arm\+\_\+cfft\+\_\+radix2\+\_\+instance\+\_\+q31\+::fft\+Len}

length of the FFT. \Hypertarget{structarm__cfft__radix2__instance__q31_a2607378ce64be16698bb8a3b1af8d3c8}\index{arm\_cfft\_radix2\_instance\_q31@{arm\_cfft\_radix2\_instance\_q31}!ifftFlag@{ifftFlag}}
\index{ifftFlag@{ifftFlag}!arm\_cfft\_radix2\_instance\_q31@{arm\_cfft\_radix2\_instance\_q31}}
\doxysubsubsection{\texorpdfstring{ifftFlag}{ifftFlag}}
{\footnotesize\ttfamily \label{structarm__cfft__radix2__instance__q31_a2607378ce64be16698bb8a3b1af8d3c8} 
uint8\+\_\+t arm\+\_\+cfft\+\_\+radix2\+\_\+instance\+\_\+q31\+::ifft\+Flag}

flag that selects forward (ifft\+Flag=0) or inverse (ifft\+Flag=1) transform. \Hypertarget{structarm__cfft__radix2__instance__q31_ab81d873079b8038422da0d459fc8fd63}\index{arm\_cfft\_radix2\_instance\_q31@{arm\_cfft\_radix2\_instance\_q31}!pBitRevTable@{pBitRevTable}}
\index{pBitRevTable@{pBitRevTable}!arm\_cfft\_radix2\_instance\_q31@{arm\_cfft\_radix2\_instance\_q31}}
\doxysubsubsection{\texorpdfstring{pBitRevTable}{pBitRevTable}}
{\footnotesize\ttfamily \label{structarm__cfft__radix2__instance__q31_ab81d873079b8038422da0d459fc8fd63} 
const uint16\+\_\+t \texorpdfstring{$\ast$}{*} arm\+\_\+cfft\+\_\+radix2\+\_\+instance\+\_\+q31\+::p\+Bit\+Rev\+Table}

points to the bit reversal table. \Hypertarget{structarm__cfft__radix2__instance__q31_aa4c768710741df76a39bae591014612f}\index{arm\_cfft\_radix2\_instance\_q31@{arm\_cfft\_radix2\_instance\_q31}!pTwiddle@{pTwiddle}}
\index{pTwiddle@{pTwiddle}!arm\_cfft\_radix2\_instance\_q31@{arm\_cfft\_radix2\_instance\_q31}}
\doxysubsubsection{\texorpdfstring{pTwiddle}{pTwiddle}}
{\footnotesize\ttfamily \label{structarm__cfft__radix2__instance__q31_aa4c768710741df76a39bae591014612f} 
const q31\+\_\+t \texorpdfstring{$\ast$}{*} arm\+\_\+cfft\+\_\+radix2\+\_\+instance\+\_\+q31\+::p\+Twiddle}

points to the Twiddle factor table. \Hypertarget{structarm__cfft__radix2__instance__q31_ae63ca9193322cd477970c1d2086407d1}\index{arm\_cfft\_radix2\_instance\_q31@{arm\_cfft\_radix2\_instance\_q31}!twidCoefModifier@{twidCoefModifier}}
\index{twidCoefModifier@{twidCoefModifier}!arm\_cfft\_radix2\_instance\_q31@{arm\_cfft\_radix2\_instance\_q31}}
\doxysubsubsection{\texorpdfstring{twidCoefModifier}{twidCoefModifier}}
{\footnotesize\ttfamily \label{structarm__cfft__radix2__instance__q31_ae63ca9193322cd477970c1d2086407d1} 
uint16\+\_\+t arm\+\_\+cfft\+\_\+radix2\+\_\+instance\+\_\+q31\+::twid\+Coef\+Modifier}

twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table. 

The documentation for this struct was generated from the following files\+:\begin{DoxyCompactItemize}
\item 
C\+:/\+Users/\+ASUS/\+Desktop/dm-\/ctrl\+H7-\/balance-\/9025test/\+Middlewares/\+ST/\+ARM/\+DSP/\+Inc/arm\+\_\+math.\+h\item 
C\+:/\+Users/\+ASUS/\+Desktop/dm-\/ctrl\+H7-\/balance-\/9025test/\+Middlewares/\+ST/\+ARM/\+DSP/\+Include/dsp/transform\+\_\+functions.\+h\end{DoxyCompactItemize}
